package top.hudk.design.observer;

import java.util.ArrayList;
import java.util.List;

/**
 * 作用：上课铃响
 *
 * @author hudk
 * @date 2020/12/11 9:29
 */
public class LessonBellSubject extends AbsLessonBellSubject{

    @Override
    public void eventProcess() {
        System.out.println("响铃了");
    }
}
